Specifications

Installation
20220760L 87
Setting-Up
Follow the instructions in Section 7 and in the IS15 Wind
Manual, section 6.
Expanding the system
You may add another 7 instruments to an IS15 system that
contains an IS15 Expander. Please refer to Figure 6-34 and
observe the following:
• The Main system is powered by the Expander
• The Secondary system is powered by an IS15 Power Supply
• The two systems are interfaced on NMEA using a single
Roblink cable between the two
• The Secondary system is a repeater system to the Main system
• All sensors are connected to the Expander
• All NMEA interface to peripheral equipment is to the
Expander
Please observe:
1. All system units should be the latest version.
2. The Power Supply has a 5m (16’) Roblink cable as standard.
3. If you need to extend the cables, please order standard IS15
cables and the cable adapter (joiner) as per our price list and
observe the max. cable lengths as per Figure 6-6. Maximum
recommended (NMEA) cable length between Main and
Secondary system is 70 m (230’).
4. Plan your installation so that heads from the two systems are
not placed adjacent to each other. You may notice a minor
delay in response between the Main and the Secondary
system depending on the type of information you are
reading. This is caused by the transfer time on NMEA
format.
5. When commissioning, start with the Main system, then
duplicate on the Secondary system, i.e. first time turn-on,
units, off-sets, illumination bank, etc. Perform the
calibrations using the Main system and then enter the
calibration values into the Secondary system.
6. Normal operational settings, e.g. depth alarms, damping and
illumination must also be set on both systems.
7. You can only turn off the IS15 depth sounder from the Main
system.